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CVE-2021-27692

Description

Command Injection in Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN allows remote attackers to execute arbitrary OS commands via a crafted "action/umountUSBPartition" request. This occurs because the "formSetUSBPartitionUmount" function executes the "doSystemCmd" function with untrusted input.

POC

Reference

- https://hackmd.io/%40aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu

- https://hackmd.io/@aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu

Github

- https://github.com/ARPSyndicate/cve-scores